Monorail vehicle with interior shells arrangement
US-10717449-B2 · Jul 21, 2020 · US
polyphase motors
polyphase motors · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B60L9/28 |
| Official title | polyphase motors |
| Display label | polyphase motors |
| Total patents | 71 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 11 |
| 2017 | 10 |
| 2018 | 11 |
| 2019 | 10 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Vehicle electrical system for a rail vehicle, method for operating the vehicle electrical system, and rail vehicle
US-2020216102-A1 · Jul 9, 2020 · US
Railroad vehicle, voltage estimating device for power supply line, and method for estimating voltage of power supply line
US-10625758-B2 · Apr 21, 2020 · US
Apparatus and method for rapid charging using shared power electronics
US-2020114770-A1 · Apr 16, 2020 · US
Apparatus and method for rapid charging using shared power electronics
US-10543755-B2 · Jan 28, 2020 · US
Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency
US-10483799-B2 · Nov 19, 2019 · US
Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency
US-10476303-B2 · Nov 12, 2019 · US
Track-bound vehicle converter
US-10434882-B2 · Oct 8, 2019 · US
Circuit system for railroad vehicle
US-2019299789-A1 · Oct 3, 2019 · US
Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency
US-2019267839-A1 · Aug 29, 2019 · US
Apparatus and method for rapid charging using shared power electronics
US-10377259-B2 · Aug 13, 2019 · US
Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency
US-2019207421-A1 · Jul 4, 2019 · US
Apparatus and method for rapid charging using shared power electronics
US-2019176651-A1 · Jun 13, 2019 · US
Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency
US-10230268-B2 · Mar 12, 2019 · US
Power converter
US-2019006951-A1 · Jan 3, 2019 · US
Power converter for electric locomotive
US-10141858-B2 · Nov 27, 2018 · US
Power conversion device and AC electric-vehicle drive system
US-10075097-B2 · Sep 11, 2018 · US
Hybrid drive system
US-10065511-B2 · Sep 4, 2018 · US
Railroad Vehicle, Voltage Estimating Device for Power Supply Line, and Method for Estimating Voltage of Power Supply LIne
US-2018222501-A1 · Aug 9, 2018 · US
Monorail vehicle with shaped interior shell
US-10040461-B2 · Aug 7, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B60L9/28?
- CPC B60L9/28 is the Cooperative Patent Classification code for “polyphase motors.”
- How many patents are filed under CPC B60L9/28 (polyphase motors)?
- Our database includes 71 publications tagged with this CPC code.
- Is patent activity under CPC B60L9/28 growing?
- Publication counts under this code: 2 in 2023 vs 3 in 2024 (latest complete years).